/**
 *  Copyright (C) 2011  Thomas ROBIN
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package triseries;

import java.io.File;

/**
 * @author tshepo
 *
 */
public class Repertoire {

	private static final boolean DEBUG = (Main.debug || MyProperties.debug.equalsIgnoreCase("Repertoire"));
	private File repertoire;
	private File[] listeFichier;
	private int fichierRestants;

	public Repertoire(String nomRepertoire) {
		if(DEBUG) System.err.println("Repertoire("+nomRepertoire+")");
		repertoire = new File(nomRepertoire);
		if (!repertoire.isDirectory()) {
			Main.processExeption(nomRepertoire+" : Repertoire incorrect (Nom inexistant ou non repertoire)");
		}
		listeFichier = repertoire.listFiles();
		fichierRestants = listeFichier.length;
	}

	public File nextFile() {
		if(DEBUG) System.err.println("Repertoire.nextFile()");
		while (isNotEmpty() && !listeFichier[fichierRestants - 1].isFile()) {
			fichierRestants--;
		}
		if (fichierRestants == 0) {
			return null;
		}
		return repertoire.listFiles()[--fichierRestants];
	}

	public boolean isNotEmpty() {
		return (fichierRestants > 0);
	}
}
